To search the two parts of the Hangul-Hanja dictionary you can use the scroll bars on the sides of the System Dictionary and User Dictionary scrolling list areas.
To find the Hanja(s) associated with a particular Hangul word, turn on Hangul input conversion and then proceed as follows:
Type the Hangul word in the Hangul: field.
The entry appears reverse-video highlighted in the preedit area as you type.
Commit the entry by pressing Control-K.
The following display appears:
With the correct Hangul word committed in the Hangul: field, click on the Find button to command the Hanja Tool to search.
This produces a display like the following:
The line beneath the status area tells the number of the word in the User Dictionary and System Dictionary.